Use of a multifunctional extended optical correlator for cuneiform inscription analysis

Nazif Demoli; Uwe Dahms; Hartmut Gruber; Guenther K.G. Wernicke

doi:10.1117/12.187296

29 September 1994 Use of a multifunctional extended optical correlator for cuneiform inscription analysis

Nazif Demoli, Uwe Dahms, Hartmut Gruber, Guenther K.G. Wernicke

Proceedings Volume 2297, Photonics for Processors, Neural Networks, and Memories II; (1994) https://doi.org/10.1117/12.187296
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

Ancient cuneiform inscriptions are remains of historic and cultural value. The characterization of cuneiform signs by means of feature enhancement, feature extraction, detection, and identification is therefore of special interest. The use of methods minimizing the in-class objects sensitivity while maximizing the discriminability for out-of-class objects is indispensable due to the inherent sensitivity of optical pattern recognition. To analyze cuneiform inscriptions a multifunctional experimental device was advanced enabling correlation experiments to be performed including an automatic prefiltering procedure. An original technique for coherent optical averaging is introduced. The in-class and out-of-class correlation sensitivities are compared for different types of matched spatial filters including classical single sign filter, optically averaged filter, digitally averaged filter, and multiplexed filter.

Citation Download Citation

Nazif Demoli, Uwe Dahms, Hartmut Gruber, and Guenther K.G. Wernicke "Use of a multifunctional extended optical correlator for cuneiform inscription analysis", Proc. SPIE 2297, Photonics for Processors, Neural Networks, and Memories II, (29 September 1994); https://doi.org/10.1117/12.187296

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